how big is the bosc your on about?? mine are 1 year and the other is 8 months..
it costs me £14.79 for 100 extra large locusts. soon going to up to 150 extra large..a week
1.50 a week on fish {sprats}
£10 on frozzen a week
so your looking at about £105 a month for mine at the mo but can add another £20 on top of that when i up my locust order. hope that helps